Double-impulse internal-explosive engine.



H. V. JOHANSEN. DOUBLE IMPULSE INTERNAL EXPLOSIVE ENGINE.

Patented Dec. 21, 1909.

APPLICATION FILED DEC. 2, 1907.

Fla-1.

nnrrnn sra rns Parana carrot HUGH VALDEMAR JOHANSEN, OF DEVONPORT, NEAR AUCKLAND, NEW ZEALAND.

DOUBLEJMPULSE INTERNAL-EXPLOSIVE ENGINE.

Zealand, engineer, have invented 'a new and.

useful Double-Impulse Internal-Explosive Engine, of which the following is a specifi-i other revolution as is the case with the ordi-- nary type of oil or gas engine in use at present.

In the accompanying drawings three figures are shown of which:

Figure 1 is a sectional elevation'ot the engine showing its various parts, Fig. 2 is a 'section through the gland and st-uihng box of the engine showing method of packing the gland, and Fig. 3 is a plan of one of the split rings used in packing the glands.

The piston A which is fitted with ordi nary piston rings B, works within the cylinder 0. Cylinder heads D D are bolted in a well known manner to the top and bottom flanges of the cylinder C and communicate with the cylinder by means of the inlet passages E, E and the exhaust passages F, F To the cylinder heads D and D" are bolted in a well known mannerthe inlet valve boxes G and G communicating with the inlet passages E and E and the exhaust valve boxes H and H communicating with. the exhaust passages F and F. These valve boxes G and G and H and H extend in the direction of the axis of the cylinder and are fitted with valves J and J and K and K which move axially of the said boxes and. are held on their seats by means of the springs L and L. The valves J, J and K, K are operated by means of the pivoted two-armed levers M, M which in turn are operated by the revolving cams N, N and Specification of Letters Patent. Application filed-December 2, 1907, Serial lqo. 404,818.

Patented Dec. 211, 1909.

O, O mounted on the cam shafts P and R which are ournaled in bearings secured at the sides of the cylinder heads and extend parallel to the cylinder. To the bottom end of the cam shal'ts P and R screw gears S and T are fixed, these screw gears S and-T en gage with screw gears U and V mounted on the crank shaft V. The screw gears S and T are so proportioned to the screw gears U and V that it takes two revolutions of the latter in order to turn the former through one complete revolution thus each of the valves J, J and K, K will only beopcrated or opened once for every two complete revolutions of the crank shaft \V.

Suitable water cooling passages or jackets X X are formed in the cylinder heads I) and D vand a similar jacket Z is formed around the cylinder 0 by surrounding the cylinder C with a second cylinder or sleeve a of thin metal, preferably brass or copper, the cylinder abeing suitably secured to the flanges of the cylinder C.

The piston A carries a piston rod Z) secured by nuts or other suitable means, this piston rod Z) works through the glands o o in the cylinder heads I) and D and at its top or outward end extends some distance through the gland 0 into a circular oil chamber d. -A hole 6 is formed through the center or core of the piston rod, extending downward till it reaches to about the middle of the piston A, when it meets two diagonal holes formed in the piston A. These holes f extend to the outside circumference of the piston A. The oil chamber 03 being filled with oil by means of unscrewing the capg at the top thereof when the piston rod 2) is on its upstroke some of the oil contained in the oil chamber (Z is forced through the hole (1 along the hole to within the cylinder C, thereby efliciently lubricating the walls of the cylinder. The oil chamber (Z is secured by means of the usual studs which secure the gland c. A convenient form of cross head It is formed on the bottom end of piston rod 6, this cross head h works in guides j; the arm of the crank shaft W is connected to the cross-head h by means of connecting rod 70.

Any suitable form of ignition may be used, but preferably electric, in which case the sparking. plugs are screwed into the holes at m.

The cylinder C may if preferred have a cylinder jacket cast on instead of the loose each mass 8 of tight in the cylinder heals D and D by means of the stuflin boxes 79 which are fitted with a series of spit metal rings 1' shaped conically as shown in Figs. 2 and 3; between i the metal rings r and at the top of the first metal ring 1 and at the bottom of the last or bottoinmetal ring 1' is placed a mass 8 of thin shavings or ribbons of white metal. On tightening the gland 0 by means of the ordinary gland studs and nuts, each ring 7' by reason of its conical or wedge shape forces white metal ribbon against the piston rod Z), thereby compensating for wear in the packing, and preserving a tightworking piston rod.

he engine is mounted on a bed plate t which carries the crank shaft bearings u and the columns 2: for supporting the cylinder and guides. Suitable fly wheels or pulley wheels y are fitted to crank shaft W.

The inlet valve boxes G and G are connected by means of a common pipe to the oil Vapor or gas or explosive mixture supply and the exhaust valve boxes H and H are in like manner connected by a common exhaust pipe.

The cam N is so set on the cam shaft P as to 0 crate the valve J once for every two revo utions of the crank when the piston is on its down stroke, the valve J being likewise operated once for every two revolutions of the crank when the piston A is on its upstroke and each valve K and K is in like i manner operated once for every two revolutions of the crank shaft W, the valve K when the piston A is on its upstroke and the valve K when the piston A is on its downstroke.

It will be seen that the piston A on its down stroke draws in a charge of gas or oil vapor or mixtiire through the valve J, the ia ve K being also open. On'the upstroke of the piston the gas in the top end of the 1 cylinder is compressed and the inlet valve 1 I J being opened a charge of gas is drawn in the bottom end of the cylinder C; when the piston has reached the top of this stroke the compressed char e in the top endof the cylinder is exploded by means of an electric spark, or like means thus propelling the pis tondownward and compressing the char e in the bottom end of the cylinder which in turn is exploded propelling the piston u ward the valve K being open on this stro e allowing the exhaust gases contained in the upper end of cylinder to escape, and this cycle is then repeated continuously while tie engine is runnin Having fully described my invention what desire to claim and secure by Letters Patent is In an, explosive engine of the type set forth, in combination, an engine cylinder, heads secured at the ends thereof andeach provided with a pair of o ositely located ports, communicating with the cylinder, valve boxes fitted to the heads, in alinement with the ports, and extendin in the direction of the axis of the cylin er, valves disposed in the boxes, movable axially thereof and having projecting stems, springs to maintain the valves normally closed, a twoarmed lever pivoted adjacent each valve and having an end engaging the valve ste'm and a laterally projecting end, bearings provided at opposite sides ofthe cylinder heads, Ion itudinal shafts journaled an extending parallel to the cylinder, cams provided on the shafts, for engagement with the projecting ends of the ad acent levers, a transverse crank shaft and caring between thefcrank shaft and each 0 the first-named s 1a ts.

"HUGH VALDEMAR JoHANsEN.

Witnesses:

GEORGE WILLIAM BAsLEY, HILDA MAY FROUDE.

in the bearings 

